Web-printing platen-press



F. WAITE. WEB PRlNTl NG PLATEN PRESS. APPLICATION 'FILED\APR. I3. 1920.

Patented Oct. 19,1920.

UNITED STATES,

' rnnn warrn, OFo'rLEY, NEAR LEEDSQENGLAND. 1

PATENT, 0

FFICE.

WEB-PRINTING rnA'rEn-rREss.

Application filed April 13,

two platens and a rocking frame carrying corresponding type-beds arranged to give alternate impressions.

Hitherto, this kind of press has been de signed for fast printing either in one or two colors on one side only of the paper or web which has been passed direct across both platens; and the object of this present invention is to construct the press in such a manner as to enable both sides of the paper or web to be printed upon in succession. According to my invention, the paper or web is threaded over a guide roller situated at the inside edge of the first platen and passed backward over the face of the said first platen on which it receives the first pression and then around suitably positioned rollers which guide it completely around and keep it clear of the first rocking type-bed and its printing mechanism, after which it is passed through the rocker and under a guide roller set in advance of and having its underside level with the face of the second platen over which it then passes forwardly to receive the second impression.

By these means the paper is first printed on one side of the Web by the first platen and subsequently, by the reversal of the paper through the provided guiderollers, printed on the opposite side of'the web by the second platen; and one of the rollers which guide the web may be adjustably mounted so as to enable the printing distance between the platens to be varied to make the two impressions register.

In this way, both sides of the paper are printed upon in succession; and as there is a clear passage for the paper between the two side frames of the rocker, no difficulty is presented to the forward travel of the web through the machine.

In the drawing the figure is a side elevation of a portion of a web-printing platen press of the kind specified, fitted with means in accordance with my invention for V M Specification of Letters Patent.

zontal plane on said 1920. Serial in. 373,480.

enablingv be printedupon in succession. I Referringto the drawing, the framing 11 of'the' press is provided with two platens 2 over which on the said framing lat 4 is pivoted'a. rocking frame 5 carrying corresponding type-beds 6, 7 arranged to give alternate impressions in'the usual or known manner; and 8 is the paper or webto be printed upon. f

According to our'invention, the paperor web 8-is threaded over a guide roller 9 situated at the inside edge of the first platen 2 and passed backward over the face of the said first platen 2 on which it receives the first impression and then around suitably positioned guide rollers 10, 11, 12, and 13 oth sides of the; paper or web to Patented Oct. 19, i

which guide it completely around and keep I it clear of the first rocking type-bed 6 and its printing mechanism, after which it is passed through the rocker 5 and under a guide roller 14 set in advance of and having its underside level with the face of the second platen 3 over which it then passes forward to receive the second impression; the guide roller. 9 being rotatablymounted between a pair of end brackets 15 fixed to the press framing 1 while the ide rollers 10,

11, 12, 13 and 14 are rotata 1y mounted between a pair of auxiliary side frames 16 also fixed to the press framing 1.

The direction of travel of the aper or web 8 is indicated by arrows; and 1t will be seen that by employing the means described the paper or web 8 is first printed on one side by the first platen 2 and subsequently (by the reversal of the paper or web 8 through the medium of the provided guide rollers) printed on its opposite side by the second platen 3, which means that both sides of the paper or web 8 are printed upon in succession.

One of .the rollers which guide the paper or web 8, 2'. c. the guide roller 12, is adjustably mounted between the side frames 16 so as to enable the printing distance between the platens 2, 3 to be varied to make the two impressions register,

What I claim as my inventionand desire to secure by Letters atent is 1. In a web-printing platen press, the combination with the stationary framing, of two platens arranved in the same horiframe mounted over said platens carrying framlng, a rocking two type-beds situated on one and the same side of said rocking frame adapted to give alternate impressions, and a series of guide rollers for guiding the web across the faces of the two platens and being adapted to turn over the web after it leaves the first platen and before it reaches the second platen so as to print upon both sides of the web in succession.

2. In a web-printing platen press, the combination with the stationary framing, of two platens arranged in the same horizontal plane on said framing, al rocking frame mounted over said platens carrying two type-beds situated on one and the same side of said rocking frame adapted to give alternate impressions, and auxiliary side frames fixed to the press framing carryinga series of guide rollers for guiding the web across the faces of the twoplatens and being adapted to turn over the web after it leaves the first platen and before it reaches the second platen so as to print upon both sides of the web in succession.

3. In a web-printing platen press, the

alternate impressions, an

mounted over said platens carrying two type-beds situated on one and the same side of said rocking frame adapted to give auxiliary side frames fixed to the press raming carrying a series of guide rollers for guiding the web across the faces of the two platens and being adapted to turn over the Web after it leaves the first platen and before it reaches the second platen so as to print'upon both sides of the Web in succession; one of the guide rollers on the auxiliary side frames being adjustable so as to enable the printing distance between the two platens to be varied to make the two impressions register. In witness whereof I have hereunto set my hand in the presence of two witnesses.

FRED WAITE.

. \Vitnesses: I V

JOHN Jown'r'r, GYRIL BELLAMY. 

